3 years ago

4x - 3y = -28x + 5y = 39 cant seem to be able to figure the answer for this

Mathematics

1 answer:

Rus_ich [418]3 years ago

4 0

value of x = -1 and value of y=8

Step-by-step explanation:

We need to solve the system of equations:

$4x - 3y = -28\,\,\,(1)\\x + 5y = 39\,\,\,(2)$

Multiply eq(2) with 4 and subtract with eq(1)

$4x-3y=-28\\4x+20y=156\\-\,\,\,-\,\,\,\,\,\,\,\,\,\,\,\,\,\,-\\--------\\-23y=-184\\y=\frac{-184}{-23}\\y=8$

So, value of y=8

Now, finding value of x by putting value of y in equation 2

$x+5y=39\\x+5(8)=39\\x+40=39\\x=39-40\\x=-1$

So, value of x = -1

value of x = -1 and value of y=8

Keywords: System of Equations

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4x - 3y = -28x + 5y = 39 cant seem to be able to figure the answer for this​

4x - 3y = -28x + 5y = 39 cant seem to be able to figure the answer for this